Lianas, woody. Stem tuberculate. Branchlets terete, with longitudinal ridges and distinct lenticels, glabrous; tendrils bifurcate. Leaves pedately 7-or 8-foliolate; petiole 3-10(-18) cm; central petiolule 0.8-2 cm, petiolules of lateral leaflet complex usually ca. as long as that of central petiolule, lateral petiolules very short or lateral leaflets sessile, glabrous; central leaflet obovate-elliptic or lanceolate, 8-15(-21) × 2-7 cm, lateral leaflets 2.5-15 cm, glabrous, lateral veins 5-9 pairs, veinlets inconspicuous, margin 5-15-toothed on each side. Inflorescence umbelliform, axillary, or leaf-opposed or pseudoterminal on lateral branches, 4-13 cm; peduncle 5-8 cm, pubescent. Pedicel 1-3 mm, pilose. Petals elliptic or oval, 1.3-1.7 mm, apex galeate, glabrous. Stamens 4; filaments filiform, longer than pistil in male flowers; anthers yellow, oval. Disk developed either in female or male flowers, 4-lobed. Lower part of ovary adnate to disk; style inconspicuous; stigma expanded, 4-lobed. Berry purple at maturity, spheroid, 0.8-1.5 cm in diam., 3-or 4-seeded. Seeds obovoid-triangular, base attenuate to rostrum, apex retuse. Fl. Jun-Jul, fr. Oct-Mar.
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